Coal-mining machine.



J. GRICAR.

C0 AL MINING MACHINE. v APPLICATION FILED mu. 25, 1911.

,333. Patented Sept. 10,1918.

2 SHEETS-SHEET GRICAR.

COAL MINING MACHINE.

APPLICATION m n JAN.25. 1917.

Patented Sept. 10, 1918.

2 SHEETS-SHEET 2.

t g-rtoe'nfot attorney- JOHN GBICAB, OF LOWELL, ARIZONA;

coAL-e cnmn.

Specification of Letters Patent. Patented Sept, 10, 191$,

' Application filed January 25, 1917. Serial No. 144,518.

To all whom it may concern."

Be it known that I, JOHN GRIoAR, a subject of the Emperor of Austria,residing at Lowell, in the county of Cochise and State of Arizona, haveinvented certain new and useful Improvements in Coal-Mining'Mawherebythe cutting members may be fed into the work to a limited extent withoutshifting the anchoring means.

In the drawing formingla application and in whic like-referencecharacters refer to corresponding parts throughout the several views:

Figure 1 is a side elevation of the device.

Fig. 2 is a horizontal sectional view thereof.

Fig. 3 is a view partly in elevation and partly in section upon lineHIITI of Fig. 1.

Fig. 4 is a longitudinal sectional view taken upon line IVIV of Fig. 2.

Fig. 5 is a perspective view of one of the side brackets of theanchoring member, and

Fig. 6 is a perspective view of one of-the cutting members detached.

Referring more in detail to the drawing the device broadly consists ofan ovalshaped frame 10 of channel-bar formation having an uprightinverted substantially U-shaped arch or anchorin member 11 centrallypositioned therein a apted to adjustably engage the-top and bottom ofthe mine 12 and 13, respectively, the said, frame adapted for carryingmanually operable cutters 14, and being longitudinally shiftablyarranged upon the said anchoring member 11.

The anchoring member for the device comprises oppositely positionedbrackets15 and 16 of similar formation arran ed inwardly of the frame 10with outwar y propart of thlS' on the shaft 25.

jecting flanges 17 within which the frame 10 islongitudinally slidablyarranged in horizontal position. The inner sides of the brackets 15 and16 are provided with parallel vertical inclosing flanges 18 within whichthe parallel side beams 19 of-the anchoring member 11 are seated andsecured and whereby the anchoring member is arranged perpendicularlywith respect to the frame 10. A horizontal-bottom beam 20 connects thebrackets 15 and 16 together, the same assisting the enlarged feet 21 ofthe brackets 15 and 16 in forming a base upon which the anchoring member11 may seat upon the mine bottom 13, affording a stable mounting meansfor the frame 10 of the machine, it being understood that an adjustablepoint 22 is threaded upon the holding member 23 at the top. of theanchoring member 11' for forcible engagement with the top 12 of the minewhereby the member 11 is temporarily fixedly positioned at a desirablepoint within the mine. A locking screw 24 is carried by the point 22 formaintainmg the same in its adjusted position upon the; member 23. Calks17' are carried by ,thefeet 17 for engagement with the bottom of themine. The anchoring member 11 and brackets 15 and 16 are readilyseparated from the frame 10 to facilitate transportation. Y

An 5 operating shaft 25 is transversely journ'aled upon the anchoringmember 11,

being providedv with a plurality of turn cranks as illustrated at 26 inFig. 1 and,

by dotted lines in Fig. 3 of the drawings. tub-shafts 27 are'journaledwithin angular arms 28 at the outer sides of the brackets 15 and 16 uponwhich gears 29 are secured in constant mesh with toothed racks 30 formedat opposite marginal points on the 'upper face of the frame 10. Sprocketchains 31 connect the shaft 25 with a sprocket 25 upon a sleeve 27 ofthe bracket 28 by running over a sprocket member 33 journaled Thestub-shafts 27 are connected to the sleeves 27 by means of gear wheels3232' mounted upon the said stub-shafts and sleeves. A clutch member 34is' arranged for each of the sprocket members 33, the same. beingsplined upon the shaft 25 and adapted to be moved inland out ofclutching engagement with the ion sprocket members by means of shiftlevers 35. It will be understood that by turning 1 either or both of thecranks 26, when the clutch members 34 are in mesh with the 5 sprocketmembers 33, as normally maintained by the springs 33' on the shaft 25,the stub-shafts 27 will be turned for feeding the frame in the desireddirection longitudinally upon the brackets and 16, simultaneously withthe operation of said cutters .14 by the means hereinafter de scribed. I

i A power chain 36 is arranged within the outwardly opened channel 37 of the frame 10 being mounted 'upon anti-friction rollers 38 carriedwithin the frame and projecting outwardly through slots 39, the cuttingmember '14 being removably secured and suitably spaced apart upon thechain 36 by bolts 40, the said mem ers 14 being-fitted for free slidinmovement within the channelv 37 of the ame. The cutting teeth 41 of themembers '14 have sharpened outer edges 42 projecting from the frame 10adapted for engaging the side of the mine and cutting the coal duringtheoperative movement of the chain 36 in the direction indicated by anarrow in Fig. 2 of the draw ings. Clearing teeth 14 are alternatelyarranged upon the chain 36 intermediate the teeth 14 for clearing awaythe cuttings, while differently. formed teeth may be employed ifldesired.

A shaft or axle 44 is journaled in the, bracket 16 between an extension45 carried thereby and the adjacent foot 21, a sprocket wheel 46 beingcarried by the said axle in constant operative engagement with thepower-chain 36 through a longitudinal slide slot 47 of the frame 10,while a transverse shaft 48 is journaled between theextensio'n 45 andthe arm 49 of the opposite bracket 15. Beveled pinions 50 and 51 arecarried by the shafts 48 and 44, respectively, being in constant meshwith each other while the shaft 48 is operatively connected with theshaft by means of a sprocketchain 52 passing over sprockets 53 arrangedupon the said shafts. The bottom flange 37, of the frame 10 has aplurality of openings 10 therethrough to allow the cuttings to dropbeneath the frame, preventing the teeth from clogging.

The complete operation of the device will be apparent from this detaileddescription thereof, the anchoring of the machine at the desired pointwithin the mine having been already described. With the frame 10arranged adjacent the wall of the mine, where- 60 by the cutting blades42 will engage the coal, the cranks 26 are turned for revolving thesprocket wheel 46 thereby operativelymoving the chain 36 and forcing theblades 42 into engagement with the work, while '65 simultaneouslytherewith the stub-shafts 27 are turned for feeding the frame 10 towardthe wall being operated upon. The levers 35 may be operated to releasethe clutches whenever it is desired to operate the cutter chain36fivithout feeding the frame 10.1ongitudi- 11% yi It will be noted thata clutch connection is provided between the chain 52 and the shaft 25,the same consisting of a clutch member 10 slidably splined upon theshaft 25 and adapted for clutching engagement with the sprocket member.11 which is journaled upon the shaft 25 and over which the chain 52runs, operating lever 12 being pro- ,vided for the said clutch. It willbe understood that by releasing the clutch member 10 the shaft 25 may beturned for feeding the frame 10 lbngltudinally withdrawing the" teeth 14from the work without operat ing the chain 36. By the arrangement hereindescribed, the shaft 25 may be turned without operating either of thechains 31 and, 52 or all simultaneously as found desirable, while theframe 10 or the chain 36 may be separately operated.

What I claim as new is 4 1. A coal mining machine including a pair ofspaced oppositely positioned supporting brackets each having a pair ofspaced horizontal outwardly positioned guide flanges and a verticalinwardly positioned socket, a jack including an upright arch memberhaving its ends removablyreceived within the sockets of said bracketsand adapted to connect'the latter, a substantially oval horizontalchannel frame longitudinally slidably guided and supported by saidbrackets between the horizontal flanges thereof, an endless coal cutterchain arranged in the channel of said frame, and means associated with 15 said brackets and said arch member toshift said frame and to operate.said cutter chain. 2. A coal mining machine including a ack having aninverted substantially U- shaped upright member, a pair of spacedoppositely positioned brackets removably attached to the lower ends ofthe legs of said member and having base supporting feet, a horizontalsubstantially oval channel frame arranged outwardly of andlongitudinally shiftably guided and supported by said brackets, anendless coal cutter. chain, operately arranged in the channel of saidframe, and means associated with said brackets and said upright memberto operate said cutter 1 0 chain and to shift said frame.

3. A coa1 mining machine including a pair of spaced oppositelypositioned brackets, each having a pair of horizontal outwardlypositioned spaced flanges and a vertical inner socket, a jack includingan inverted substantially U'-shaped upright member having the lower endsof its legs removably recelved within said sockets, a horizontalsubstantially oval channel frame longitudi- 139 yna-lly-shiftablyguided'and supportedbysaid stant mesh with said racksandhaving oper-- brackets between said horizontal flanges ative connectionswith said power shaft, and thereof, an endless coal cutter chainaroperative connections between said power 1 ranged in the channel ofsaid frame, a transshaft and the cutter hain.

5 verse power shaft carried by the legs of said In testimony whereof Iaffix my signature.

upright member, toothed racks upon the upper flange of said frame, gearsin con- JOHN GRICAR.

